挪威石油董事会油气储量分类标准和spe的对比

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1、NorwegianPetroleumDirectorate(NPD–2001)OneoftheprincipaltasksoftheNorwegianPetroleumDirectorate(NPD)istomaintainanoverviewofpetroleumresourcessothatauthoritiescanhavethebestpossiblebasisforplanningmeasurestoensurethattheyarewellmanaged,andtoforecastfutureproducti

2、onandactivity.TheNPD’sannualupdatingoftheresourceaccountforexpectedrecoverableresourcesfocusesonclassificationbymaturity.Thissystemwasdevelopedin1997.Basedonexperiencegainedinusingthesystemandincooperationwithseveraloilcompanies,theNPDdevelopedandpublisheditscurr

3、entrevisedsystemin2001.ThecurrentsystembuildsontheSPE/WPC/AAPG2000classificationbutexpandsontheprojectmaturityaspect.ThemainprincipalintheNPDclassificationsystemisthatoriginallyrecoverableresourcesinafieldordiscoverymustbeclassifiedaccordingtotheirpositioninthede

4、velopmentchain,eitherfromadiscoverybeingmade,oranewopportunitytoincreaserecoverableresourcesinafieldbeingidentified,untilproductionoftheresourcesiscomplete.Thesystemisdesignedtoallowasinglefieldordiscoverybeingabletocontainresourcesindifferentprojectstatuscategor

5、ies,i.e.resourcesatdifferentstagesofmaturityinthedevelopmentchain.Allresourcesmust,asfaraspossible,bereportedwithahighandalowestimateinadditiontothe“baseestimate”.Thisallowsanopportunitytodescribetheuncertaintyintheresourcequantitiesinboththeindividualfieldsandth

6、efullresourceaccount(totalportfolio).Theresourcesaredividedintotendifferentprojectstatuscategories(Figure1).Figure1:NorwegianPetroleumDirectorateClassificationCategories0to7coverthediscovered,recoverableresources,Possiblefuturemeasurestoimprovetherecoveryfactorar

7、eplacedincategory7alongwithdiscoveriesthathavenotyetbeenevaluated.Categories6and9coverundiscoveredresources.The“F”labelidentifiesquantitieslinkedtotheinitialrecoveryprojectwhile“A”areadditionalquantitiesfromimprovedrecoveryprojects.Therearecaseswhere“A”canbenegat

8、ive;forexample,oilrecoveryimprovementsmayinvolvegasconsumption.AllcompaniesoperatinginNorwaymustannuallysubmitresourceinformationaccordingtothisclassification.